Alert archive / Colorado / Mesoscale Discussions in 2004

Mesoscale Discussion 2004

August 14, 200413 counties in Colorado

The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2004, 3:45 PM MDT for 13 counties in Colorado. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
Aug 14, 2004, 3:45 PM MDT (21:45 UTC)
Expired
Aug 14, 2004, 5:15 PM MDT
In force
90 min
Issued by
the Storm Prediction Center

Counties Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO, Washington County, CO

The radar

The Pueblo radar (KPUX), 56 km from the middle of the area, began a volume at 21:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 9.8 hours before the alert went out and 169 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2004-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2004-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
34 J/kg
Mixed-layer CIN
-292 J/kg
Mixed-layer LCL
1364 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

125 
ACUS11 KWNS 142146
SWOMCD
SPC MCD 142145 
COZ000-142315-

MESOSCALE DISCUSSION 2004
NWS STORM PREDICTION CENTER NORMAN OK
0445 PM CDT SAT AUG 14 2004

AREAS AFFECTED...ERN CO

CONCERNING...CONVECTIVE TRENDS 

VALID 142145Z - 142315Z

ISOLATED SVR STORMS OVER ECENTRAL CO SHOULD PROPAGATE SWD AROUND 10
KTS THROUGH ELBERT INTO EL PASO AND LINCOLN COUNTIES THROUGH 00Z.
OVERALL THREAT APPEARS TO BE ISOLATED ENOUGH THAT A WW IS NOT
ANTICIPATED. 

AXIS OF MLCAPES FROM 1000-1500 J/KG AND 35 KT OF DEEP LAYER SHEAR
SHOULD SUPPORT ISOLATED SVR STORMS OVER ECENTRAL CO FOR THE NEXT FEW
HOURS...AS THEY MOVE SWD ALONG LEE TROUGH INTO SERN CO. ADDITIONAL
STRONG TO SEVERE T-STORM DEVELOPMENT REMAINS POSSIBLE ALONG THE LEE
TROUGH NORTH OF THE RATON RIDGE REGION OF SERN CO AND SHOULD REMAIN
ISOLATED AS WELL.

..CROSBIE.. 08/14/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...GLD...PUB...BOU...

37340458 38070512 40310352 40450279 38910235 37550214
37020327

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 12:54 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Bent, Cheyenne, Costilla, Crowley and 14 more2 hr

Nearby

Mesoscale Discussions in Colorado, 2004Every mesoscale discussion in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.